The dwarf checkerboard cichlid, Dicrossus filamentosus, is a boldly colored dwarf cichlid from the Rio Negro with a fascinating personality and is one of Project Piaba’s featured fishes. Dicrossus can be slightly more challenging to keep than your average Rio Negro...

Nannostomus trifasciatus, the three lined pencilfish, is a small but beautiful aquarium fish native to the Rio Negro, and one of Project Piabas featured fishes. Three lined pencilfish reach a maximum size of 1.5 inches and have three striking bold black lines running...

Apistogramme gephyra is a colorful dwarf cichlid from the Rio Negro and is one of Project Piabas featured fishes. There are many related species of dwarf cichlids that look similar, however gephyra is distinguished by a subtle yet striking red fringe on the dorsal...

Crenuchus spilurus, the Sailfin Tetra, are a species of tetra from the Rio Negro and other Amazon watershed rivers. Reaching a size of 3-3.5 inches, they are larger than your typical home aquarium tetra and should be kept in tanks 20 gallons and larger, with higher...

Acarichthys heckelii, or Threadfin Acara, is one of the more elegant-looking cichlids, developing long trailing thread-like projections on their dorsal fin as adults. These fish are native to the northern parts of the Amazon basin in Colombia, Peru, and Brazil. Adults...